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Polyoxamide resin having excellent impact resistance and impact-resistant part

A polydiacetamide, impact resistance technology, applied in the field of parts and components, to achieve the effects of excellent melt formability, excellent oxidation resistance, and excellent resistance to ethanol penetration

Inactive Publication Date: 2013-05-15
UBE IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Crystalline polyamides represented by nylon 6 and nylon 66 are widely used as clothing materials, fibers for industrial resources, or general-purpose engineering plastics because of their excellent characteristics and easy melt molding. On the other hand, there are also reports that There are problems such as changes in physical properties due to water absorption, and deterioration of properties in acids, high-temperature alcohols, and hot water. The requirements for polyamides with better dimensional stability and better chemical resistance are getting higher and higher.

Method used

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  • Polyoxamide resin having excellent impact resistance and impact-resistant part
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  • Polyoxamide resin having excellent impact resistance and impact-resistant part

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preparation example Construction

[0035] As the oxalic acid source used in the preparation of the polydiacetamide of the present invention, oxalic acid diester is used, as long as it has reactivity with the amino group, it is not particularly limited, for example, dimethyl oxalate, dioxalate Oxalic acid diesters of aliphatic monohydric alcohols such as ethyl ester, di-n-(or iso)propyl oxalate, di-n-(or iso-, t-)-butyl oxalate, etc., oxalic acid diesters of alicyclic alcohols such as dicyclohexyl oxalate Oxalic acid diesters of aromatic alcohols such as phenyl esters, etc.

[0036] Among the above-mentioned oxalic acid diesters, oxalic acid diesters of aliphatic monohydric alcohols with more than 3 carbon atoms, oxalic acid diesters of alicyclic alcohols, and oxalic acid diesters of aromatic alcohols are preferred, among which dibutyl oxalate and dibutyl oxalate are particularly preferred. phenyl esters.

[0037] As the diamine component, a diamine having 10 to 18 carbon atoms is used. Plant-derived diamines ...

Embodiment 1）

[0089] (i) Pre-polycondensation process: Add 875.0g (5.0809 mol) 1,10-decanediamine from plants, the raw material inlet is directly connected to the raw material feed pump through a pipe with a diameter of 1 / 8 inches, and 875.0 g (5.0809 moles) from For plant 1,10-decanediamine, pressurize the pressure vessel to 3.0 MPa with nitrogen gas with a purity of 99.9999%, then discharge the nitrogen gas to normal pressure, repeat this operation 5 times, and then treat the system under confining pressure Warm up inside. After bringing the internal temperature to 190° C. over 20 minutes, 1,027.6 g (5.0808 mol) of dibutyl oxalate was injected into the reaction vessel from a raw material feed pump at a flow rate of 65 ml / min over about 17 minutes. The internal pressure in the pressure-resistant container immediately after the entire amount was injected rose to 0.65 MPa due to 1-butanol produced by the polycondensation reaction, and the internal temperature rose to 197°C.

[0090] (ii) F...

Embodiment 2）

[0093] (i) Pre-polycondensation process: Add 875.05g (5.0812mol) to a 5L pressure-resistant container equipped with a stirrer, thermometer, torque meter, pressure gauge, nitrogen gas inlet, pressure release port, polymer outlet and raw material inlet 1,10-decanediamine from plants, the raw material input port is directly connected to the raw material feed pump through a pipe with a diameter of 1 / 8 inch, and the pressure-resistant container is pressurized to 3.0 MPa with nitrogen with a purity of 99.9999% After that, the nitrogen gas was discharged to normal pressure, and this operation was repeated 5 times, and then the temperature in the system was raised under the confining pressure. After the internal temperature reached 190° C. over 20 minutes, 1027.14 g (5.0812 mol) of dibutyl oxalate was injected into the reaction vessel through the raw material feed pump at a flow rate of 65 ml / min over about 17 minutes while raising the temperature. The internal pressure in the pressur...

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Abstract

Provided is a polyoxamide resin which has excellent impact resistance and is characterized in that the polyoxamide resin is obtained from a diamine in which the diamine component has 10 to 18 carbons and in that the polyoxamide resin has a relative viscosity (r) of 2.1 or greater as determined at 25 DEG C using 96% sulfuric acid as a solvent and a solution having a concentration of 1.0 g / dL, and also provided is an impact-resistant part comprising this resin. The polyoxamide resin has a higher molecular weight than a conventional polyoxamide resin, a large moldable temperature range as estimated from the difference between the melting point and the thermal decomposition temperature and therefore excellent molten moldability, and furthermore excellent impact resistance when compared to a conventional aliphatic polyoxamide resin without losing the low water absorbency, chemical resistance, hydrolysis resistance, high elasticity, and high strength seen with aliphatic straight-chain polyoxamide resins.

Description

[0001] Relationship to Related Applications [0002] This application requires Japanese Patent Application No. 2010-209859 filed with the Japan Patent Office on September 17, 2010, Japanese Patent Application No. 2010-209887 filed with the Japan Patent Office on September 17, 2010, and Japanese Patent Office filed on March 31, 2011. For the priority of Japanese Patent Application No. 2011-080065, the contents of these applications are referred to and incorporated in this application. technical field [0003] The invention relates to a polydiethylamide resin and parts containing the resin. Background technique [0004] Crystalline polyamides represented by nylon 6 and nylon 66 are widely used as clothing materials, fibers for industrial resources, or general-purpose engineering plastics because of their excellent characteristics and easy melt molding. On the other hand, there are also reports that There are problems such as changes in physical properties due to water absorpt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G69/26
CPCC08G69/26C08G69/265C08L77/06C08J5/00
Inventor 前田修一仓知幸一郎奥下洋司花冈康成薮直靖中川知之
Owner UBE IND LTD
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